import java.util.*;
import java.net.*;
import java.io.*;

class Sock{
    public static String getFlag(String hostName, Integer port){
        int bufferSize = 20;
        byte[] data = new byte[bufferSize];
        String output = "";

        try{
            Socket socket = new Socket(hostName, port);
            for(int i = 0; i < bufferSize; i++){
                if(socket.getInputStream().read(data, i, 1) <= 0){
                    break;
                }
            //socket.getInputStream().read(data, i, 1); //0 to indeks gdzie zaczynay,
            output = output + (char) data[i]; 
            }
            socket.close();
        }
        catch(IOException e){
            System.out.println(e);
        }

        return output;
    }
}

class Main
{
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        Integer port = scan.nextInt();

        System.out.println(Sock.getFlag("127.0.0.1", port)); //wyprintuje SUCCESS

    }
}